KMZ Super Overlay

<p>KMZ superoverlay is a google earth file format, in which a bigger image is broken down into small tiles at each zoom level. This helps is fast rendering of image over google earth or online map server, as it just requests only the tiles displayed at certain zoom level.</p>
<p><strong>To create KMZ superoverlay you can use gdal_translate executable as follows:-</strong><br /> <em>”gdal_translate -of KMLSUPEROVERLAY -co FORMAT=png -ot Byte -scale -outsize 50% 50% inp.tif out.kmz”</em></p>
<p><strong>Command line options explained:-</strong><br /> -co FORMAT=png is the output format, it is important to choose png format as it creates transparent layer were there is no data.<br /> -outsize is optional, it just reduces the pixel resolution of KMZ file.<br /> -ot Byte is useful to convert floating point or 16 bit rasters to 8 bit.</p>

<a href=””><img class=”wp-image-1600 size-large” src=”″ alt=”KMZ SuperOverlay created from 32 bit floating point raster” width=”800″ height=”610″ /></a> KMZ SuperOverlay created from 32 bit floating point raster